mod_wsgi – Find Out The Version

The mod_wsgi is an Apache module that provides a WSGI compliant interface and serves for hosting Python based web applications under Apache (for example Django).

To find out which version of mod_wsgi is installed or compiled, it is required to create a simple WSGI application.

From the following article you will learn how to create and run on Apache a simple WSGI application that prints the version of mod_wsgi.

Cool Tip: Check whatever WSGI module is enabled or not! Read how to →

mod_wsgi – Get The Version

Create a directory for WSGI application:

# mkdir -p /usr/local/www/wsgi-scripts

Here is a simple WSGI application script that prints the version of mod_wsgi:

def application(environ, start_response):
    status = '200 OK'
    output = str(environ['mod_wsgi.version'])
    response_headers = [('Content-type', 'text/plain'),
                        ('Content-Length', str(len(output)))]
    start_response(status, response_headers)
    return [output]

Save it to /usr/local/www/wsgi-scripts/version.wsgi file.

Create a virtual host config in Apache:

<VirtualHost *:80>
    WSGIScriptAlias /version /usr/local/www/wsgi-scripts/version.wsgi
    <Directory /usr/local/www/wsgi-scripts>
    Require all granted # Apache 2.4+
    Order allow,deny
    Allow from all
    </Directory>
</VirtualHost>

And, depending on your distribution, save it to /etc/httpd/conf.d/example.com.conf if you use CentOS, RHEL etc., or to /etc/apache2/conf.d/example.com.conf for Debian, Ubuntu etc.

Cool Tip: New to Python and WSGI? Create your first simple ‘Hello World’ application with mod_wsgi and Apache! Become a real developer →

Execute one of the below commands, to reload Apache and apply modifications.

# service httpd reload

On Debian, Ubuntu etc.:

# service apache2 reload

Use curl to run your WSGI application directly from the web-server’s command line and print the version of mod_wsgi:

# curl http://localhost/version
(3, 5)